每日一题

线程练习
编写三各类Ticket、SealWindow、TicketSealCenter分别代表票信息、售票窗口、售票中心。售票中心分配一定数量的票，由若干个售票窗口进行出售，利用你所学的线程知识来模拟此售票过程。

不喝茶的陆羽 · 不喝茶的陆羽

求教各位大神，为什么我的总是第一个线程就运行完了？

class Ticket{
private static int ticketNum;

public int getTicketNum() {
return ticketNum;
}

public Ticket(int ticketNum){
this.ticketNum=ticketNum;
}
public static  boolean available(){
if(ticketNum>0){
return true;
}
else{
return false;
}
}
public static  void sealTicket(String winName){
System.out.println(winName+"-----恭喜您，您已完成票务购买-----");
System.out.println("还剩余"+(--ticketNum)+"张票");
}
}
class SealWindow implements Runnable {
private String winName;
private Ticket ticket;

SealWindow(String winName,Ticket ticket){
this.winName=winName;
this.ticket=ticket;
}
public void run(){
System.out.println("欢迎来到"+winName+"售票窗口，很高兴为您服务");
synchronized(ticket){
while(ticket.available()){
Ticket.sealTicket(winName);
}
}
System.out.println("-----票已卖完，下次发售时间：明早8:00，欢迎届时购买-----");
}
}
public class Test7 { //此处的Test7应该为TicketSealCenter，但是因为考试要求中的类名规范，特此说明

public static void main(String[] args) {
//售票中心分配售票窗口和总票数
// 生产票送到售票中心
Ticket ticket = new Ticket(1000);
//建立 3个售票窗口
SealWindow sw1 = new SealWindow("售票窗口一",ticket);
SealWindow sw2 = new SealWindow("售票窗口二",ticket);
SealWindow sw3 = new SealWindow("售票窗口三",ticket);

new Thread(sw2).start();
new Thread(sw1).start();
new Thread(sw3).start();
}
}

vipzh · vipzh

本帖最后由张号于 2013-3-11 17:47 编辑

不知道为什么总是只有一个线程运行

//售票窗口
public class SealWindow
{
public static void main(String[] args)
{
new Thread(new TicketSealCenter(), "1号窗口").start();
new Thread(new TicketSealCenter(), "2号窗口").start();
new Thread(new TicketSealCenter(), "3号窗口").start();
new Thread(new TicketSealCenter(), "4号窗口").start();
new Thread(new TicketSealCenter(), "5号窗口").start();
new Thread(new TicketSealCenter(), "6号窗口").start();
}
}
// 售票中心
class TicketSealCenter implements Runnable
{
private void sale() throws Exception
{
Ticket ticket = new Ticket();
// 售票中心分配火车票
ticket.setTicketNum(10);
while (ticket.isEmple())
{
System.out.println(Thread.currentThread().getName() + "售出一张"
+ "还剩下" + ticket.getTicketNum() + "张票");
if (ticket.getTicketNum() == 0)
{
System.out.println("票已经卖完了，明天再来吧！！！");
}
}
}
@Override
public void run()
{
try
{
//同步代码块
synchronized (TicketSealCenter.class)
{
sale();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
// 火车票类
class Ticket
{
private int ticketNum; // 火车票张数
// 获得火车票的数量
public int getTicketNum()
{
return ticketNum;
}
// 设置火车票数量
public void setTicketNum(int ticketNum)
{
this.ticketNum = ticketNum;
}
// 判断是否有票
public boolean isEmple() throws Exception
{
if (ticketNum > 0)
{
ticketNum--;
Thread.sleep(1000);
return true;
}
else
{
System.exit(0);
return false;
}
}
}

复制代码

刘聪 · 刘聪

public class ThreadDemo {
public static void main(String[] args) {
SailCenter sc = new SailCenter(200);
for(int i=0;i<4;i++) {
new Thread(new SailWindow(sc)).start();
}
}
}
class Tricket {
//do something!
}
class SailWindow implements Runnable{
SailCenter sc = null;
public SailWindow(SailCenter sc) {
this.sc = sc;
}
public void run() {
while(true) {
int id = sc.sail();
System.out.println(Thread.currentThread().getName() + "sailed Num." + id );
try {
Thread.sleep(1000 * 1);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
class SailCenter {
int tircket_count;
public SailCenter(int count) {
this.tircket_count = count;
}
public synchronized int sail() {
if(this.tircket_count > 0) return this.tircket_count--;
else{
System.out.println("Sorry,there is none of trickets");
System.exit(0);
return 0;
}
}
}

复制代码

i want to join in as soon as possible!!!Thanks ,i will great appreciate it！

郭宁 · 郭宁

郭宁发表于 2012-5-22 01:10
等到这个时候就是为了连選四楼哈~
不知道管理员大大看我这么夜读圣贤书会不会每楼都加一分，好助我早点 ...

娃哈哈~~这下好了！

郭宁 · 郭宁

等到这个时候就是为了连選四楼哈~
不知道管理员大大看我这么夜读圣贤书会不会每楼都加一分，好助我早点去黑马哇~~~~

郭宁 · 郭宁

package com.ticket;
public class TicketSealCenter {
/**
* @param args
* 售票中心分配售票窗口和总票数
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
// 生产一千张高铁票送到售票亭
Ticket ticket = new Ticket(1000);
//建立五个售票窗口吧~~~
SealWindow sw1 = new SealWindow("售票窗口一",ticket);
SealWindow sw2 = new SealWindow("售票窗口二",ticket);
SealWindow sw3 = new SealWindow("售票窗口三",ticket);
SealWindow sw4 = new SealWindow("售票窗口四",ticket);
SealWindow sw5 = new SealWindow("售票窗口五",ticket);
new Thread(sw1).start();
new Thread(sw2).start();
new Thread(sw3).start();
new Thread(sw4).start();
new Thread(sw5).start();
}
}

复制代码

郭宁 · 郭宁

package com.ticket;
public class SealWindow implements Runnable {
private String winName;
private Ticket ticket;
public SealWindow(String winName,Ticket ticket) {
// TODO 设置窗口的名字
this.winName = winName;
this.ticket = ticket;
}
@Override
public void run() {
// TODO Auto-generated method stub
while(seal());
}
//高铁票回血大甩卖了啦！！！
private boolean seal(){
synchronized(ticket)
{
if(ticket.sealTicket())
{
System.out.println(winName+"·······售出一张，还剩余:"+ticket.getTicketnum());
return true;
}
else
{
System.out.println(winName+"温柔的给你说“亲~~ 我真不愿意告诉你，票没抢光了~~~~”");
return false;
}
}
}
}

复制代码

郭宁 · 郭宁

本帖最后由郭宁于 2012-5-22 01:07 编辑

package com.ticket;
public class Ticket {
private int ticketsnum;
public Ticket(int ticketnum) {
// TODO 设置默认票数
this.ticketsnum = ticketnum;
}
/**
* 判断是不是木有票了
* 是返回 true
* 不是返回 false
* */
public boolean isEmpty(){
if(ticketsnum>0)
return false;
else
return true;
}
/**
*返回剩余票数
* */
public int getTicketnum(){
return ticketsnum;
}
/**
* 功能：卖票
* 卖出去了返回 true
* 没卖出去返回false；
* */
public boolean sealTicket(){
if(isEmpty())
{
return false;
}
else
{
ticketsnum--;
return true;
}
}
}

复制代码

李斌 · 李斌

上面的都是牛人啊。。。

攻城狮 · 攻城狮

余宏发表于 2012-5-21 23:39
import java.util.Vector;

public class Ticket {

编写三各类~~~

攻城狮 · 攻城狮

杨永峰发表于 2012-5-21 23:41
上代码：（自然不够全面、健壮，请多提出改进意见）

我和你做的也一样····就是想看到更多的方法
楼下请继续答完一起加分

杨永峰 · 杨永峰

本帖最后由杨永峰于 2012-5-21 23:47 编辑

上代码：（自然不够全面、健壮，请多提出改进意见）

// 每日一题————————简单模拟售票过程。
public class SaleWindows {
public static void main(String[] args){
SaleCenter sc = new SaleCenter(200);
SaleTicket st = new SaleTicket();
sc.setNum(st);// 售票中心分配票数
// 创建线程
Thread t1 = new Thread(st,"一号窗口");
Thread t2 = new Thread(st,"二号窗口");
Thread t3 = new Thread(st,"三号窗口");
Thread t4 = new Thread(st,"四号窗口");
Thread t5 = new Thread(st,"五号窗口");
Thread t6 = new Thread(st,"六号窗口");
// 启动线程
t1.start();
t5.start();
t4.start();
t2.start();
t6.start();
t3.start();
}
}
class SaleTicket implements Runnable{
private int tickets;
public void setTotalNum(int tickets){
this.tickets = tickets;// 设置发售总票数
}
private synchronized void sale(){
if(tickets > 0){
System.out.println(Thread.currentThread().getName() + "售出第 "+ (tickets--)+"张票");
try{
Thread.sleep(tickets);
}catch(InterruptedException e){
e.printStackTrace();
}
}
}
public void run(){
while(tickets > 0){
sale();
}
}
}
class SaleCenter{
private int ticketsnum;
SaleCenter(int ticketsnum){
this.ticketsnum = ticketsnum;
}
public void setNum(SaleTicket st)
{
st.setTotalNum(ticketsnum); // 授权票数上限
}
}

复制代码

余宏 · 余宏

import java.util.Vector;

public class Ticket {
   public  int ticketNum = 100;  // 总票数
   private boolean isConsumer = false; // 是否有顾客
private Vector<Integer> numVector = new Vector<Integer>();

/**
   * 售票
   */
public synchronized void saleTicket() {
      // 是否有顾客，没有就等待
      if (!isConsumer) {
         try {
            wait();
         } catch (InterruptedException e1) {
               e1.printStackTrace();
         }
      }
}
/**
   * 获取顾客
   */
public synchronized void getConsumer() {
      // 是否有顾客，有就等待
      if (isConsumer) {
         try {
            wait();
         } catch (InterruptedException e) {
            e.printStackTrace();
         }
      }
      // 判断票是否已经售完
      if(ticketNum==0){
         System.out.println("对不起,今天的票已售完,请明天早点来！");
      }
      try {
         Thread.sleep(10);
      } catch (InterruptedException e) {
         e.printStackTrace();
      }
      isConsumer = true;
      notify();
      }
}

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